On the postive side, it seems a little snafu happened yesterday that points to a release being potentially near at hand - it seems RIM published a bunch of Knowledge Base articles about Facebook 1.5 to their Technical Solution Center (details/links below) which they then promptly removed from public access when somebody realized it wasn't yet available (thank you Google Reader for caching the feed and big thanks to Jerry for the tip):

Add Facebook events to the Calendar application on the BlackBerry smartphone -KB16331

On the potentially bad news side, we've actually had a few reports come in now saying the release of the Facebook 1.5 app is at least a few weeks away still (read: April... potentially even May). We HOPE this isn't the case, but it sounds like there may still be some room for improvement in the app stability department that needs to be addressed before it gets released. We'll keep you updated as we learn more.

There is an app you can dowload to add facebook messenger to your BB. Go to www.palringo.mobi download and install it. Once on your phone, add the facebook service and you're set. You'll be texting your life away with all your facebook pals right on your BB.

NOTE: I installed this on my friends javelin last week and it would not add facebook on the phone. So we downloaded palringo on PC and added the services there. Once that was done on PC signed back in on phone and you'll be set!